CN215298609U

CN215298609U - Carbon dioxide property verification experimental device

Info

Publication number: CN215298609U
Application number: CN202121703598.2U
Authority: CN
Inventors: 向国忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-12-24
Anticipated expiration: 2031-07-26

Abstract

The application relates to a carbon dioxide property verification experimental device, which comprises a candle (1), a horizontal channel (4), a T-shaped joint (5), a channel supporting component and a carbon dioxide preparation device; the two horizontal channels (4) are arranged side by side, and have two states of horizontal placement and vertical placement under the action of the channel supporting component, one side in each horizontal channel (4) is provided with a candle (1), and the end part of the other side is closed; three joints of the T-shaped joint (5) are respectively communicated with the other sides of the two horizontal channels (4) and the air outlet end of the carbon dioxide preparation device; wherein, the horizontal state and the vertical state respectively mean that the two horizontal channels (4) are at the same height and at different heights. The experimental device is convenient to operate, obvious in contrast experiment phenomenon and capable of repeatedly carrying out experiments.

Description

Carbon dioxide property verification experimental device

Technical Field

The application relates to the field of teaching aids, in particular to a carbon dioxide property verification experiment device.

Background

The CO2 gas is non-combustible, and denser than air. For the verification and demonstration of this property of CO2, the human religious nine-year-class chemistry book, page 117, experiment 6-3, describes: (see FIG. 1 of the present application), carbon dioxide gas was slowly poured into the beaker and the phenomenon was observed and analyzed. Theoretically, the phenomena and analyses seen should be as shown in the following table.

Phenomenon(s)	The two candles were extinguished sequentially from bottom to top.
		Analysis of	CO₂The gas does not support combustion and is denser than air. More CO is firstly accumulated at the bottom of the beaker during pouring₂The candle below is firstly contacted with more CO₂To extinguish first When out, the candle above is contacted with CO₂And then extinguished.

However, in the actual operation process, the extinguishing sequence of the two candles is often not obvious due to the forward pouring position or the too fast pouring speed, and a correct conclusion cannot be drawn. In this regard, the teaching refers to that the experiment should be noted in the teaching: the amount of carbon dioxide in experiment 6-3 was sufficient, suggesting that the volume of the gas collection bottle was somewhat larger than the volume of the beaker. When the candle is toppled, a piece of glass sheet can be used for shielding, so that the phenomenon that the carbon dioxide is directly toppled to the upper layer to enable the candle on the upper layer to be extinguished first is prevented. At the same time, the CO to be produced should be avoided₂Direct access to the bottom of the beaker by a catheter or funnel, as this experiment is intended to give the student CO₂The conclusion that combustion is not supported and that the density is greater than that of air. If directly introducing CO₂Introduced into the bottom of the beaker and, regardless of its density, first exposed to CO₂Must be a lower candle, and the experimental results in this case do not indicate CO₂Is denser than air.

It can be seen that, when the existing experimental device is used, in order to obtain an ideal phenomenon and analyze a strict conclusion based on the ideal phenomenon, the matters needing attention are too many, and the fact that manual operation is often uncontrollable does not accurately achieve the contents of the matters needing attention. Therefore, a carbon dioxide property verification experimental device which is convenient to operate and obvious in phenomenon is needed.

Disclosure of Invention

The technical problem that this application will be solved provides a convenient operation, the obvious carbon dioxide nature of phenomenon verifies experimental apparatus.

In order to solve the problems, the application provides a carbon dioxide property verification experimental device which comprises a candle, a horizontal channel, a T-shaped joint, a channel supporting component and a carbon dioxide preparation device; the two horizontal channels are arranged side by side and have two states of horizontal placement and vertical placement under the action of the channel supporting assembly, one side of the interior of each horizontal channel is provided with the candle, and the end part of the interior of the other side of each horizontal channel is closed; three joints of the T-shaped joint are respectively communicated with the other sides of the two horizontal channels and the air outlet end of the carbon dioxide preparation device; wherein, the horizontal state and the vertical state respectively mean that the two horizontal channels are at the same height and at different heights.

Preferably, the horizontal state and the vertical state respectively mean that a plane formed by the two horizontal channels is in a horizontal state and a vertical state.

Preferably, the two horizontal channels and the T-shaped joint are of an integral structure.

Preferably, the two horizontal channels are made of a see-through material.

Preferably, the T-shaped joint is connected with the air outlet end of the carbon dioxide preparation device through a hose.

Preferably, the channel supporting component is at least two square plates, and each square plate is provided with two round holes for the horizontal channel to pass through.

Preferably, the square plate is made of a highly transparent organic glass plate.

Compared with the prior art, the method has the following advantages:

when the candle is used, the two horizontal channels are horizontally placed for the first time, and the two candles are extinguished at the same time, which indicates that the carbon dioxide does not support combustion or does not combust; the second time two horizontal channels were placed vertically, and the candle on the bottom was observed to be extinguished, while the candle on the top was not extinguished. By contrast, carbon dioxide does not support combustion, nor does it burn, and is also denser than air. The experimental device is convenient to operate, obvious in contrast experiment phenomenon and capable of repeatedly carrying out experiments.

Drawings

The following describes embodiments of the present application in further detail with reference to the accompanying drawings.

Fig. 1 is a diagram illustrating a carbon dioxide property verification experiment in the prior art.

Fig. 2 is a schematic structural diagram of an experimental apparatus for verifying carbon dioxide properties provided in an embodiment of the present application.

In the figure: 1-candle, 2-round hole, 3-square board, 4-horizontal channel, 5-T type connects, 6-hose, 7-brandreth platform, 8-anchor clamps, 9-reaction test tube, 10-reactant.

Detailed Description

Referring to fig. 1, the embodiment of the present application provides a carbon dioxide property verification experimental apparatus, which mainly includes two candles 1, two horizontal channels 4 (about 40mm of pipe inner diameter), a T-shaped joint 5, a channel support component, and a carbon dioxide preparation device. The channel supporting component is at least two square plates 3, and two round holes 2 for the horizontal channel 4 to pass through are formed in each square plate 3. In practical application, the square plate 3 can be made of a high-transparency organic glass plate.

The carbon dioxide preparation device is conventional configuration, for example include iron stand platform 7, establish reaction test tube 9 on iron stand platform 7 through anchor clamps 8, and reaction test tube 9 bottom is placed and is used for producing the reactant 10 of carbon dioxide gas (for example limestone and dilute hydrochloric acid), and the top is equipped with the sealing plug and establishes the outlet duct on the sealing plug, and the outlet duct top is carbon dioxide preparation device's the end of giving vent to anger, passes through hose 6 with T type joint and realizes being connected.

The two horizontal channels 4 are arranged side by side with a distance of about 10cm, and can be horizontally placed and vertically placed under the support of the channel support assembly, wherein the horizontally placed state and the vertically placed state respectively mean that the two horizontal channels 4 are at the same height and different heights. From the viewpoint of simplifying the structure and facilitating the operation, the flat state may be a state in which the plane formed by the two horizontal passages 4 is horizontal, and the vertical state may be a state in which the plane formed by the two horizontal passages 4 is vertical.

One side of each horizontal channel 4 is provided with a candle 1, and the other side far away from the candle 1 is communicated with the air outlet end of the carbon dioxide preparation device through a T-shaped joint 5; the horizontal channel 4 is provided with an open end at one side of the candle 1 and a closed end at the other side away from the candle 1.

The horizontal channel 4 and the T-shaped joint 5 are arranged into an integral structure, so that the assembly steps are reduced, and the operation is convenient. At least the horizontal channel 4 is made of a see-through material (e.g., clear glass) to facilitate viewing of the burning of the candle 1. When using this application experimental apparatus to experiment, two horizontal passages 4 are kept flat for the first time, and both form the plane and be the horizontality promptly parallel with the desktop, and two candles 1 extinguish simultaneously, explain that carbon dioxide does not support the burning, also do not burn. The two horizontal channels 4 are vertically arranged for the second time, the planes formed by the two horizontal channels are vertical, namely, the two horizontal channels are vertical to the table top, the candle 1 below can be observed to be extinguished, and the candle 1 above cannot be extinguished. By contrast, carbon dioxide does not support combustion, nor does it burn, and is also denser than air. The device is simple to manufacture, has obvious contrast experiment phenomenon, and can repeatedly carry out experiments.

It should be noted that the pipe diameter of the portion of the T-joint 5 for connecting the two horizontal channels 4 cannot be too thin because: if the carbon dioxide preparation reaction is fast, carbon dioxide flows into the two branches of the T-shaped joint 5, so that the experiment fails when the two horizontal channels 4 are vertically placed, and the verification that the density of the carbon dioxide is larger than that of air is influenced.

The technical solutions provided by the present application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the structure and the core concept of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. A carbon dioxide property verification experimental device is characterized by comprising a candle (1), a horizontal channel (4), a T-shaped joint (5), a channel supporting component and a carbon dioxide preparation device; the two horizontal channels (4) are arranged side by side, and have two states of horizontal placement and vertical placement under the action of the channel supporting component, one side in each horizontal channel (4) is provided with the candle (1), and the end part of the other side is closed; three joints of the T-shaped joint (5) are respectively communicated with the other sides of the two horizontal channels (4) and the air outlet end of the carbon dioxide preparation device; wherein, the horizontal state and the vertical state respectively mean that the two horizontal channels (4) are at the same height and at different heights.

2. The experimental device according to claim 1, characterized in that said flat state and said vertical state respectively mean that the plane formed by the two horizontal channels (4) is horizontal and vertical.

3. The test device according to claim 1, wherein the two horizontal channels (4) and the T-shaped joint are of one piece construction.

4. The laboratory device according to claim 1 or 3, characterized in that said two horizontal channels (4) are made of a material that is permeable to light.

5. The experimental device as claimed in claim 1, wherein the T-shaped joint (5) is connected with the air outlet end of the carbon dioxide preparation device through a hose (6).

6. The experimental device according to claim 1, characterized in that the channel supporting component is at least two square plates (3), and each square plate (3) is provided with two round holes (2) for the horizontal channel (4) to pass through.

7. The experimental set-up according to claim 6, characterized in that the square plate (3) is made of a highly transparent organic glass plate.